Using Firefox with a 64-bit Operating System

Revision Information
  • Revision id: 12062
  • Created:
  • Creator: scoobidiver
  • Comment: added Firefox 5
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: AliceWyman
  • Is approved? Yes
  • Is current revision? Yes
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: AliceWyman
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Firefox will work on 64-bit versions of Windows, but it is not a 64-bit application. See system requirements for details on all supported systems.

For details on how to install, see How to install Firefox on Windows.

Mozilla is working on providing 64-bit versions for Firefox 5.

Firefox 4 is an i386/x86_64 universal binary. The default architecture on Mac OS X 10.6 and above is 64-bit. The default architecture on Mac OS X 10.5 is i386. See system requirements for details on supported systems.

For details on how to install, see How to download and install Firefox on Mac.

Firefox 3.6 will work on 64-bit versions of Mac OS X, but it is not a 64-bit application. See system requirements for details on supported systems.

Firefox 4 will run in 64-bit mode. For details on how to update Firefox, see Update Firefox to the latest release.

There is a x86_64 binary of Firefox 4 to run on 64-bit versions of Linux. See system requirements for details on supported systems.

For details on how to install, see Install Firefox on Linux.

Firefox 3.6 will work on 64-bit versions of Linux, but it is not a 64-bit application. See system requirements for details on supported systems.

Firefox 4 will run in 64-bit mode. For details on how to update Firefox, see Update Firefox to the latest release.